// 云函数入口文件
const cloud = require('wx-server-sdk')

cloud.init()
const db = cloud.database()
const _ = db.command

// 云函数入口函数
exports.main = async (event, context) => {
  if (event.action == "plusComment") {
    return await db.collection('video')
    .doc(event.id)
    .update({
      data: {
        commentNum: _.inc(1)
      }
    })
  }

  if (event.action == "minusComment") {
    return await db.collection('video')
    .doc(event.id)
    .update({
      data: {
        commentNum: _.inc(-1)
      }
    })
  }
}